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Advent calendar 2015
8 December
All 2015 advent puzzles
~
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What is the largest number of factors which a number less than a million has?
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720720 has 240 factors.
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proportion
complex numbers
square numbers
volume
factorials
fractions
geometric mean
rugby
graphs
numbers
trigonometry
balancing
elections
odd numbers
addition
crosswords
people maths
sport
number
spheres
2d shapes
bases
probability
rectangles
parabolas
planes
consecutive numbers
division
sum to infinity
angles
factors
averages
polygons
pascal's triangle
remainders
shapes
floors
dates
integers
tangents
axes
regular shapes
sums
square roots
square grids
range
gerrymandering
perfect numbers
surds
neighbours
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christmas
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area
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lists
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shape
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cryptic clues
wordplay
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clocks
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time
quadratics
grids
even numbers
multiplaction squares
symmetry
functions
digital products
crossnumbers
prime factors
dodecagons
percentages
sequences
folding tube maps
triangle numbers
money
digital clocks
star numbers
doubling
means
triangles
coins
geometry
calculus
powers
scales
lines
hexagons
geometric means
3d shapes
cubics
arrows
colouring
partitions
speed
ave
cryptic crossnumbers
consecutive integers
unit fractions
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chess
perimeter
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circles
pentagons
median
products
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chalkdust crossnumber
logic
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tiling
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determinants
albgebra
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